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(No Model.) 3 Sheets-Sheet 1.

' W. M. JACKSON.

METRIOAL GARBURETOE. No. 280,746. N Patented July 3,1883.

(No Model.) 3 Sheets-Sheet 2.

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IGA BURBTOR.

Patented July 3, 1883.

(No Model.) V 3 Sheets-Sheet 3. I W.v M. JACKSON.

METRIGAL GARBURBTOR. No. 280,746. Patented July 3, 1883,.

"z (a; "r556: eJRIeJ, Ia we N4 PETEns. ifhomoum n m Washington ILQ UNITED STATES PATENT OFFICE.

WALTER M. JACKSON, OFPROVIDENCE, RHODE ISLAND.

METRICAL CARBURETOIR.

SPECIFICATION formingpart of Letters Patent No. 280,746, dated July 3, 1883.

Application filed February 15, 1883. (No model.)

To all whom it may concern:

Be it known that I, WALTER M. J AcKsoN,i a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Metrical Carburetors, of which the following is a specification, reference being had therein to the ac-' companying drawings.

This invention relates to certain improvements in measuring and governing devices for metrical carburetors; and it has for its objects to provide certain means whereby the volume of air or gas supplied to the carburetor may be made to regulate the quantity of hydrocarbon liquid necessary to be supplied to the carburetor for properly charging the gas or air with the hydrocarbon vapor with the utmost accuracy, as more fully hereinafter specified, and in a more convenient and better manner than has heretofore been effected. These objects I attain by the means illustrated in the accompanying drawings, in which- "Figure 1 represents partly a top view and partly a horizontal sectional view of my invention; Fig. 2, a vertical sectional view of the displacer,taken on the line a: w of Fig. 1; Fig. 3 represents an elevation of my apparatus, showing the equalizing-tube connecting the cylinder and displacing-chamber; and Fig. 4 represents a detached perspective view of a foraminous cup employed in connection with my invention.

The letter A indicates a cylinder of suitable dimensions, constructed of brass or other suitable material, which is'closed at each end by suitable heads, B,which may be secured to said cylinder by means of threads, bolts, or oth er suitable devices.

On and against one of the heads of the cylinder, on the inside, is located a tray, 0, for receiving the measured fluid. The said tray may be cast on or secured to the head in any convenient manner, so as to extend into the center. of the measuring-wheel when the said head is in place, and be surrounded by the buckets of the said wheel. At the center of the side of the tray which adjoins one side of the measuring-wheel the metal is thickened, so as to afford sufficient body to permit of the formation of a recess, D, which is drilled .out to receive one end of the shaft E of the measuringwheel, forming a journal-bearing therefor. The said recess does not extend through the tray, but only a short distance into the thickened portion, so that the hydrocarbon fluid cannot pass through into the'tray in case the fluid-line should accidentally reach the line of the shaft.

From the opposite side of the tray, where it joins the cylinder-head, extends a pipe, F, which leads through and out of the wall of the meter, and which is joined by the gas or air pipe conducting the measured gas or air from the outlet of the meter to the carburetor. The other head of the cylinder is thickened at its center or provided with a boss, G, which is partially drilled through, forming a journalbearing for the other end of the measuring- Wheel shaft or it may be drilled through and provided with an exterior screw-cap, so as to prevent the escape of the fluid hydrocarbon.

The letter H indicates a pipe leading from one of the cylinder-heads, at a level with the bottom of the cylinder, through the wall of the meter, and suitably connected by means of a coupling, I, or any other detachable connection with a chamber, which may be styled a "displacing-chamber, to be more fully hereinafter described.

The letter K indicates a gear-wheel mounted on the shaft of the measuring-wheel, inside of meter, from whence the power is derived for actuating the mechanism for measuring the hydrocarbon fluid. The said cylinder is located, preferably, within the top of the meter, to secure the advantage of short shafting, to prevent the devices from intentional injury or injury by careless handling, and to save the necessity of passing the shafting through the walls of the meter and the necessary stuffing-boxes. This construction may be varied without departing from the spirit of my invention, however, as the entire device may be I located outside the meter and connected to the same by bolts, pulleys, shafting, gears, or other suitable mechanism.

The displacing-chamber P may be constructcd of any suitable material, but is preferably formed of heavy tinned iron, and is connected to the pipe H, leading from the bot tom of the cylinder, as before mentioned. The said pipe opens into the bottom of the displacing-chamberP, as shown in the drawings.

\Vithin the displacing-chamber is located a displacer, R, which consists of a float constructed of glass, iron, stone, wood, cork, or other suitable solid or porous material. Vhere solid or impervious material is used, the displacer is made solid or hollow, preferably solid, and when porous material is employed the same is thoroughly saturated and coated with a compound of glycerinc and gelatine', so as to prevent the absorption of the hydrocarbon and the saturation by constant immersion in the fluid hydrocarbon, so that its weight will not be increased after the apparatus has been in use by the absorption of the hydrocarbon fluid. The said displacer is of such dimensions as to occupy nearly the whole internal area of the displacing-chamber, leaving room enough only for its free motion in rising and falling. The displaeer at one edge is hinged at one or more points (indicated by the letter S) to one side of the displacing-chamber, (two of such hinged connections being shown at the present instance,) so as to secure a uniform and even motion of the displacer. From the center of said hinged edge of the displacer extends backward a projection, T, to which is pivoted a perpendicular shaft, U, which is surmounted by a valve, V, of conical or other convenient shape. The said shaft passes through a tube, \V, and the upper end forms a seat for the before-mentioned valve. The tube V, on its outside at its upper end, is formed with two shoulders, A B, one smaller than the other. These shouldered portions are threaded externally, and upon the smaller one is secured a detachable strainer, c, consisting of a cylindrical cap of perforated metal wound closely with noncorrosive wire, 6", so as to prevent any possibilityof foreign matter entering with the hydrocarbon fluid, and thus preventing clogging or injury to the valve-scat. The larger shoulder serves as a connection upon which may be secured a union or pipe, D, which leads to the bottom of a supply-tank located at any suitable point from the displacing-chamber of meter. Instead of the perforated cap, a short tubular cap of solid metal packed longitudinally with wire may be employed, if found convenient.

From one side or any suitable point of the displarcing-chamber, above the line at which it is designed to maintain the level of the hydrocarbon fluid therein, extends a tubular projection, E, the said projection being at the rear of the pivoted connections of the displacer.

From the rear of the displacer extends a projection, F, which passes through the tubular projection above mentioned, and which. is adapted to oscillate freely therein. Upon the end or stern of such projection F is secured a movable weight, F, of any desired density, which serves to counterbalance the weight of the displacer and to produce a rising and falling power, when the displacer is partially or wholly submerged, equivalent to the dil'lerence in the artificial density of the displaeer and the hydrocarbon fluid employed. The tubular extension at its outer end is provided with a chamber, G, and the chamber with a cap, G by means of which it may be closed. In stead of having the weight thus arranged, it may be located directly at the rear of the dis placer in the displacing-chamber, as indicat ed by the letter H in the drawings.

It has been found in practice desirable to construct the displacing-chamber of sufficient size to allow the use of a displaccr which shall offer considerable surface displacement, so that a low level of fluid may be maintained with the rising and falling displacement power, equal to the positive opening and closing of the valve.

It has been demonst 'ated that small meters do not permit the inclosure of a suitable-sized displacing-chamber within their tops. There fore such meters, in carrying out my invention, are designed to be connected with the dis placer, as above described.

Large meters have ample spacein their tops, and such may have the displacing chamber and cylinder located within their walls, and connected to each other by suitable hydrocarbon-ducts. To locate the displacing-chamber out-side the meter may in some instance be preferable, since by such arrangement any number of meters may be connected to one displaeer and governing device, so that the same may answer for all.

In small cylinders it is necessary to have a connecting-duct with the displacing-chamber of limited size, so that the fluid-line may rise above the duct, and thus present an equalization of pressure between the cylinder and displacing-chamber. To obviate this I connect the top of one with the other by a pipe, I, as shown in Fig. 3 of the drawings.

The operation of my invention is as follows: The gas or air to be carburetedis driven either by the pressure of the gas-holder, by an airpump, or other means through the meter, and is then measured, and its measurement recorded on an indicating-dial. \Vhile the mechanism of the meter is in operation the motion is transmitted to the measuring wheel by means of its connecting mechanism with that of the meter. The measuring-wheel is rotated in exact proportion to the inflow of gas or air, and as the buckets on the measuril 1g-wheel are constructed in conformity with the revolution of the dial-shaft of the meter to the passing of a given number of cubic feet, so the quantity of-hydrocarbon fluid is emptied from thebuckets into the tray, and transmitted to the gas or air to be enriched or carbureted. Thus, when the size of the buckets are calculated relative to the indicating-dial of the meter or the known quantity of gas or air passing,the delivery from the measuring-wheel may be an exact quantity desired. As soon as the measuring-wheel takes up and transfers a sufficient quantity of hydrocarbon liquid to decrease the level of the same in the cylinder, the displacer drops, permitting an inflow of hydrocarbon fluid just sufficient to supply the deficiency. The displacer thus maintains a practically uniform level of the fluid, and as soon as the flow of gas or air ceases the displacer closes the valve, thus cutting'off the supply of hydrocarbon fluid entirely until the operation is again commenced.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a hydrocarbon-liquid supply and distributing apparatus for metrical carburetors, the displacing-chamber provided with an inlet pipe and valve and a displacer nearly filling its horizontal area, whereby it is quickly affected by the inflow or outflow of a small quantity of liquid, in combination with the liquid-distributing mechanism and ameter for the measurement of the quantity of gas or air delivered to the carburetor, substantially as described.

2. In an apparatus for measuring and dis tributing hydrocarbon liquid to carburet gas or air, the displacing-chamber havingan i11- let liquid pipe and valve, and a pivoted displacer connected with the valve and provided with a counterbalancing-weight, in combination with the measuring and distributing apparatus, connecting and operating as described.

3. In an apparatus for measuring and delivering hydrocarbon liquid to carburet gas or air, a displacing-chamber having an inlet pipe and valve, and a displacer arranged therein, in combination with a measuring -.chamber having measuring and distributing devices arranged therein, connected by gearing with the dial-shaft of the meter, and a pipe connecting the two chambers, substantially as described.

4. The combination, with the displacingchamber and displacer, of the induction tube and valve, the tube being provided with a foraminous cap wrapped closely with wire, sub

' scribed.

pipe, the whole arranged to operate substantially as described.

8. In a hydrocarbon-liquid supply and distributing apparatus for metrical carburetors,

the tray 0, being open above the line of fluid, for the purpose of receiving and dispensing the measured fluid to the gas or air to be can bureted, in combination with the distributingchamber having a contained measuring device suitably connected with and actuatedby the meter, and connected to a displacing-chamber containing a displacer, and a valve by a liquid-pipe'or a liquid and an equalizing pipe, substantially as and for the purpose described. In testimony whereof I at'fiX my signature in presence of two witnesses.

WALTER MARSH J ACKSON.

Witnesses: v

ISAAC M. SWEET, WHIPPLE V. PHILLIPS. 

